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California Integrated Water Quality System Project (CIWQS)
   Party At-A-Glance Report

  
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General Information
Party ID Party Name Party Classification Mailing Address Work Phone Email/Website
S604743 William Lyon Homes Privately-Owned Business 4000 Executive Parkway Suite 250 Suite 150 San Ramon, CA 94583 925-543-5531 scott.jones@lyonhomes.com
  
  
  
  
Expand/Contract Related Places
Related Places
Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date
S819589 Vineyard II Contra Costa 2 Facility Discharger 10/04/2012 None
S813373 Mayfield Santa Clara 2 Facility Discharger 11/01/2011 None
S802045 Rancho Hills Deer Park Santa Clara 3 Facility Discharger 02/17/2010 None
S802038 Hidden Glen Contra Costa 5S Facility Discharger 02/17/2010 None
S802031 Paradise Valley Area K Solano 2 Facility Discharger 02/17/2010 None
S801434 Magnolia Lane Sacramento 5S Facility Discharger 12/30/2009 None
S800442 Ranch at Mossdale Landing San Joaquin 5S Facility Discharger 10/22/2009 None
S608686 Whitney Ranch Villages 27 & 28 Placer 5S Facility Discharger 05/19/2005 None
Total Related Places: 8
  
  
  
  
Expand/Contract Related Parties
Related Parties
Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification
N/A Samuel Spier Contact Owner Contact N/A N/A N/A
N/A Kurt Nunnenkamp Contact Owner Contact N/A N/A N/A
N/A Scott Jones Contact Owner Contact N/A N/A N/A
Total Related Parties: 3
  
  
  
  
Expand/Contract Regulatory Measures
Regulatory Measures (non-enforcement)
Reg. Measure ID Regulatory Measure Type Region WDID Status Program Order No. RM Effective Date RM Termination Date Relationship Relationship Start Date Relationship End Date Amended?
Total Regulatory Measures: 0
  
  
  
  
Expand/Contract Violations
Violations within the past year
Violation ID Occurrence Date Violation Type Violation Description(+) Violation Status Priority Source Facility Name Violated Reg. Meas. ID Violated Reg. Meas. Order No. Linked to Enf.
Report defaults to display violations within the last year. Click here to see last five years of violations. Refer to the Interactive Violation Report for more data.
Total Violations: 0
*Click the "(+/-) Violation Description" link to expand and contract the violation description.
  
  
  
  
Expand/Contract Enforcement Actions
Enforcement Actions
Enforcement ID Enforcement Type Enf. Order No. Title Program Effective Date Status
S405825 Notice of Violation None 2 48C357438 CONSTW 06/17/2011 Active
Total Enforcement Actions: 1
  
  
  
  
Expand/Contract Enforcement Actions
Regulatory Measures linked to Related Parties
Reg. Measure ID Organization Regulatory Measure Type Program Effective Date Status
Total Regulatory Measures linked to Related Parties: 0
  
  
The current report was generated with data as of: 07/16/2025
Regional Boards are in the process of entering backlogged data.
As a result, data may be incomplete.
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